300 Lumens per Dollar LED

[ledguy]

This LED is currently at 300 Lumens per Dollar, but the forward Voltage is at 6V and current at 150mA, please let me know what you guys think, thanks!

http://www.ledsmagazine.com/products/32640


Product specification is located at:

http://aopled.com/product_info.php?cPath=25_187&products_id=256

 

[Curt R]

That LED like the majority of LEDs are for Luminary applications only.
They do not work in flashlights as there is no way to focus the beam
pattern.

Curt

 

[Harold_B]

Specmanship at its best. 300lm/$ with output ranging from a blinding 16 to 120 lumens. Did I get that right? No actual 300 lumen device?

 

[saabluster]

Specmanship at its best. 300lm/$ with output ranging from a blinding 16 to 120 lumens. Did I get that right? No actual 300 lumen device?

I don't see a problem here. Many many companies are designing products around lumens per dollar so if this company is at the top(and I'm not saying they are) then they should shout about it.

 

[jasonck08]

Probably not really any cheaper than a company buying XM-L's in bulk 5-10K pcs and maybe paying $3-4 per emitter.

 

[Lumencraft (Matt)]

Welcome to CPF ledguy.



I dont see much use for those in a regular flashlight, but I think it'd be cool to make a lantern out of them.

 

[Harold_B]

saabluster - I understand your point. My contention with lumens per dollar specs are that the dollar value is not fixed (lumens per watt therefore is more appropriate), and that it is misleading when then the spec implies a high output product that doesn't exist. Specmanship is already an issue that gets used in marketing. Testing at 85C vs 25C, pulsed vs constant current, color separation specs or lack there of, etc.

The LEDs in the link are likely just fine for a lot of applications. Perhaps not so much for a flashlight, but I have modeled or designed with equivalents in A19 replacement bulbs, back lighting applications, edge lighting applications, and indicators. I would imagine it is a tough market segment with companies like Nichia as your competition.

 

[blasterman]

please let me know what you guys think

I'm thinking there are several locations in the literature where specifications conflict, but I'm not surprised.

There are plenty of applications where you don't need high performance Cree's, Rebels, Osram's, Bridgelux, etc. However, what you sacrifice is color value, accurate specifications, and of course - efficiency.

 

[ledguy]

Thanks guys I think the Vf kills my application since 6 Volts needs about 4 batteries in series.